WeatherWX.com
Rapid City Monthly Climate Averages
January |
February |
March |
April |
May |
June |
July |
August |
September |
October |
November |
December |
| Hi 36°F Lo 19°F | Hi 35°F Lo 17°F | Hi 48°F Lo 28°F | Hi 54°F Lo 34°F | Hi 64°F Lo 44°F | Hi 78°F Lo 56°F | Hi 86°F Lo 64°F | Hi 84°F Lo 62°F | Hi 76°F Lo 54°F | Hi 59°F Lo 40°F | Hi 47°F Lo 29°F | Hi 34°F Lo 19°F |
| 8 mph | 9 mph | 9 mph | 10 mph | 9 mph | 9 mph | 8 mph | 8 mph | 9 mph | 9 mph | 9 mph | 8 mph |
| 0.1 in | 0.2 in | 0.4 in | 1.1 in | 1.6 in | 1.2 in | 1 in | 0.7 in | 0.6 in | 0.6 in | 0.2 in | 0.3 in |
| 75% | 73% | 67% | 65% | 64% | 58% | 50% | 48% | 47% | 56% | 58% | 71% |
| 36% | 40% | 37% | 39% | 37% | 25% | 20% | 18% | 18% | 26% | 27% | 35% |
| 30.1 in | 30.1 in | 30.0 in | 29.9 in | 29.9 in | 29.8 in | 29.9 in | 29.9 in | 29.9 in | 30.0 in | 30.0 in | 30.1 in |
| 27 | 22 | 25 | 21 | 24 | 24 | 25 | 27 | 27 | 26 | 26 | 25 |
| 3 | 5 | 4 | 7 | 7 | 6 | 6 | 4 | 3 | 4 | 3 | 4 |
| 1 | 2 | 2 | 3 | 0 | 0 | 0 | 0 | 0 | 1 | 1 | 2 |
| 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| 2 | 2 | 2 | 3 | 4 | 5 | 6 | 5 | 4 | 3 | 2 | 1 |
| 74 | 63 | 75 | 68 | 71 | 90 | 101 | 103 | 98 | 88 | 84 | 76 |
January |
February |
March |
April |
May |
June |
July |
August |
September |
October |
November |
December |
| Hi 2°C Lo -7°C | Hi 2°C Lo -8°C | Hi 9°C Lo -2°C | Hi 12°C Lo 1°C | Hi 18°C Lo 7°C | Hi 26°C Lo 13°C | Hi 30°C Lo 18°C | Hi 29°C Lo 17°C | Hi 24°C Lo 12°C | Hi 15°C Lo 4°C | Hi 8°C Lo -2°C | Hi 1°C Lo -7°C |
| 13 km/h | 14 km/h | 15 km/h | 16 km/h | 15 km/h | 14 km/h | 13 km/h | 13 km/h | 14 km/h | 15 km/h | 14 km/h | 14 km/h |
| 3 mm | 6 mm | 11 mm | 29 mm | 39 mm | 30 mm | 25 mm | 18 mm | 14 mm | 16 mm | 5 mm | 7 mm |
| 75% | 73% | 67% | 65% | 64% | 58% | 50% | 48% | 47% | 56% | 58% | 71% |
| 36% | 40% | 37% | 39% | 37% | 25% | 20% | 18% | 18% | 26% | 27% | 35% |
| 1020 mb | 1020 mb | 1016 mb | 1013 mb | 1013 mb | 1011 mb | 1012 mb | 1012 mb | 1013 mb | 1015 mb | 1018 mb | 1020 mb |
| 27 | 22 | 25 | 21 | 24 | 24 | 25 | 27 | 27 | 26 | 26 | 25 |
| 3 | 5 | 4 | 7 | 7 | 6 | 6 | 4 | 3 | 4 | 3 | 4 |
| 1 | 2 | 2 | 3 | 0 | 0 | 0 | 0 | 0 | 1 | 1 | 2 |
| 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| 2 | 2 | 2 | 3 | 4 | 5 | 6 | 5 | 4 | 3 | 2 | 1 |
| 74 | 63 | 75 | 68 | 71 | 90 | 101 | 103 | 98 | 88 | 84 | 76 |
| Month |
| Avg. Temperatures |
| Avg. Wind Speed |
| Avg. Precipitation |
| Average Humidity |
| Avg. Cloud Cover |
| Pressure Average |
| Average Dry Days |
| Avg. Precip. Days |
| Avg. Snow Days |
| Average Fog Days |
| Average UV Index |
| Avg. Hours of Sun |
Averages are based on historical weather data from the past 10 years.